CN116170835A - Statistical data acquisition method, base station, network management system and storage medium - Google Patents

Abstract

The invention provides a statistical data acquisition method, a base station, a network management system and a storage medium, wherein the statistical data acquisition method comprises the following steps: when triggering information aiming at RRC connection from UE is received, determining a first statistical event corresponding to the triggering information; and reporting the first statistical event to the network management system so that the network management system updates the statistical data aiming at the physical cell according to the first statistical event. According to the technical scheme of the embodiment, the physical DU takes the information aiming at the RRC connection and sent by the UE as a trigger condition, and reports the statistical event to the network management system, so that the data statistics of the RRC connection aiming at the physical cell is realized, a data base is provided for the operation and maintenance of the physical cell, and the comprehensiveness of the operation and maintenance is improved.

Description

Statistical data acquisition method, base station, network management system and storage medium

Technical Field

The present invention relates to, but not limited to, the field of mobile communications, and in particular, to a method for obtaining statistical data, a base station, a network management system, and a storage medium.

Background

In the air interface technology of the fifth generation communication technology (5th Generation,5G), a base station is divided into a Centralized Unit (CU) and a Distributed Unit (DU), the CU is used for implementing a non-real-time wireless higher layer protocol stack function, processing a function related to a cell and a higher layer of a terminal (UE), and the DU is used for processing a function of a physical layer of the cell and the UE, and a layer 2 protocol stack function with a high requirement on real-time performance. Under the shared network scene, different operators can not only share the resources of the physical cells, but also can configure different identifications for the physical cells, so that one physical cell corresponds to a plurality of logic cells or logic base stations, and different logic base stations CU can be deployed on different physical devices.

The key performance indicators (Key Performance Indicator, KPI) of the radio resource control (Radio Resource Control, RRC) are important basis for cell operation and maintenance, and the KPI statistics of the RRC are all completed at the CU during UE access according to the existing protocol. In the shared network scenario, one physical cell corresponds to a logical base station CU, and KPIs counted by each logical base station CU only reflect RRC connection conditions of the logical cell, but cannot reflect RRC connection conditions of the physical cell, which is not beneficial to operation and maintenance of the physical cell.

Disclosure of Invention

The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a statistical data acquisition method, a base station, a network management system and a storage medium, which can be used for counting the KPI (key performance indicator) of RRC (radio resource control) connection of a physical cell and improve the convenience of operation and maintenance.

In a first aspect, an embodiment of the present invention provides a method for obtaining statistical data, which is applied to a physical DU of a physical cell, where the physical DU is communicatively connected to a network management system, and the method includes:

when triggering information aiming at RRC connection from UE is received, determining a first statistical event corresponding to the triggering information;

And reporting the first statistical event to the network management system so that the network management system updates the statistical data aiming at the physical cell according to the first statistical event.

In a second aspect, an embodiment of the present invention provides a statistical data acquisition method, which is applied to a network management system, where the network management system is in communication connection with a physical DU of a physical cell, and the method includes:

acquiring a first statistical event reported by the physical DU, wherein the first statistical event is determined by the physical DU according to triggering information aiming at RRC connection, and the triggering information comes from UE;

and updating the statistical data for the physical cell according to the first statistical event.

In a third aspect, an embodiment of the present invention provides a base station, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the statistical data acquisition method as described in the first aspect when executing the computer program.

In a fourth aspect, an embodiment of the present invention provides a network management system, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the statistical data acquisition method as described in the second aspect when executing the computer program.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the statistical data acquisition method according to the first aspect or performing the statistical data acquisition method according to the second aspect.

The embodiment of the invention comprises the following steps: when triggering information aiming at RRC connection from UE is received, determining a first statistical event corresponding to the triggering information; and reporting the first statistical event to the network management system so that the network management system updates the statistical data aiming at the physical cell according to the first statistical event. According to the technical scheme of the embodiment, the physical DU takes the information aiming at the RRC connection and sent by the UE as a trigger condition, and reports the statistical event to the network management system, so that the data statistics of the RRC connection aiming at the physical cell is realized, a data base is provided for the operation and maintenance of the physical cell, and the comprehensiveness of the operation and maintenance is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

Fig. 1 is a flowchart of a statistical data acquisition method applied to a physical DU according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a shared network according to another embodiment of the present invention;

FIG. 3 is a flow chart of a DU reporting a first statistical event according to another embodiment of the present invention;

FIG. 4 is a flowchart illustrating a first logical CU reporting a second statistical event according to another embodiment of the present invention;

fig. 5 is a flowchart of determining a first logical cell according to another embodiment of the present invention;

fig. 6 is a flowchart of a DU reporting a third statistical event according to another embodiment of the present invention;

FIG. 7 is a flowchart of providing a first logical CU reporting a fourth statistical event according to another embodiment of the present invention;

FIG. 8 is a flowchart illustrating a first logical CU reporting a fifth statistical event according to another embodiment of the present invention;

FIG. 9 is a flowchart illustrating a second logical CU reporting a sixth statistical event according to another embodiment of the present invention;

FIG. 10 is a flow chart of a method for statistical data acquisition for a network management system according to another embodiment of the present invention;

fig. 11 is a flowchart of a DU reporting a first statistics event according to another embodiment of the present invention;

fig. 12 is a flowchart of a DU reporting a third statistical event according to another embodiment of the present invention;

fig. 13 is a flowchart of data of a statistical logical cell according to another embodiment of the present invention;

FIG. 14 is a flow chart of an example one provided by the present invention;

FIG. 15 is a flow chart of example two provided by the present invention;

FIG. 16 is a flow chart of example three provided by the present invention;

fig. 17 is a device diagram of a base station according to another embodiment of the present invention;

fig. 18 is a device diagram of a network management system according to another embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The invention provides a statistical data acquisition method, a base station, a network management system and a storage medium, wherein the statistical data acquisition method comprises the following steps: when a PDU session establishment request initiated by UE is acquired, acquiring a target VN group identifier, wherein the target VN group identifier belongs to a target VN group to which the UE belongs; determining at least one optional SMF according to the target VN group identity; and determining a target SMF from the selectable SMFs according to a preset strategy, and creating a PDU session belonging to the target VN group through interaction with the target SMF. According to the technical scheme of the embodiment, at least one selectable SMF can be determined through the target VN group identifier, then the target SMF is selected according to the preset strategy, flexible SMF selection is realized through the AMF, the networking flexibility is effectively improved, and flexible configuration and flexible networking are facilitated.

It should be noted that, the implementation of the technical solution of the present invention may be based on the architecture of the shared network shown in fig. 2, including the base station and the network management system. The DU side of the base station can be composed of a physical cell DU management module, a logical cell NRCellDU management module, a logical base station gNB-DU management module and a performance statistics reporting module, and the logical cell NRCellDU management module and the logical base station gNB-DU management module can be divided into a plurality of examples according to different operators to respectively process related flows and transactions of the logical cell and the logical base station of the operator on the DU side; the physical cell DU management module is used for managing related processes and transactions at the physical cell level; the performance statistics reporting module can be used for collecting and organizing the performance statistics events generated by other modules and reporting the performance statistics events to the network manager. The CU side of the base station can be used for processing related flows and transactions of the logic cell and the logic base station of the operator on the CU side by a logic cell NRCellCU management module, a logic base station gNB-CU management module and a performance statistics reporting module; the performance statistics reporting module is used for collecting and organizing performance statistics events generated by other modules in the CU side and reporting the performance statistics events to the network manager; notably, the three modules on the CU side of different operators may be deployed on different CU devices. The network management system can comprise a module related to performance statistics, such as a performance statistics report receiving and processing module and a performance viewing and interface display module; the performance statistics report receiving and processing module is used for receiving performance statistics report information from the DU side or the CU side of the base station and carrying out corresponding statistics operation and calculation on corresponding management module objects according to the report information; the performance checking and interface display module is used for receiving a performance checking command from a user, reporting the corresponding performance statistical result to the performance statistical receiving and processing module according to the command requirement, and displaying the result to the user on the network management interface.

It should be noted that the above modules are all functional modules, and the embodiment does not limit a specific hardware structure, and can implement corresponding functions, and embodiments of the present invention are further described below with reference to the accompanying drawings.

As shown in fig. 1, fig. 1 is a flowchart of a statistical data acquisition method according to an embodiment of the present invention, where the statistical data acquisition method is applied to a physical DU of a physical cell, and includes, but is not limited to, step S110 and step S120.

In step S110, when receiving trigger information for RRC connection from the UE, a first statistics event corresponding to the trigger information is determined.

It should be noted that, according to the rules of the related protocol, when the UE initiates RRC related operations in the physical cell, a message needs to be sent to the physical DU of the physical cell, the physical DU further selects the logical base stations gNB-DU and gNB-CU to execute subsequent operations, and as shown in fig. 2, the physical DUs of different operators are deployed in the same device, so that the statistical data of the RRC connection collected by the physical DUs can be determined as the statistical data of the RRC connection of the whole physical cell, and on this basis, as shown in fig. 2, a performance statistics reporting module may be configured in the physical DUs, so as to implement the acquisition and reporting of the statistical data, where the performance statistics reporting module is a functional module well known to those skilled in the art, and specific configuration modes and statistical reporting methods are not repeated herein.

It should be noted that the triggering information of the RRC connection may be any message related to the RRC connection, for example, in the RRC connection establishment phase, the triggering information may be an RRC connection establishment request message or an RRC connection reestablishment request message, and for example, when the UE completes establishment of the RRC connection, it may be an RRC connection establishment completion message or an RRC reconnection establishment completion message, and in this embodiment, the type of the triggering information is not limited and may be related to the RRC connection.

It should be noted that, the first statistics event may be determined for the trigger information, for example, as described above, when the trigger information is an RRC connection establishment request message, the first statistics event may be the number of RRC connection establishment requests plus one, the specific description manner and the data type may be adjusted according to the configuration of the network management system, and the network management system may determine, through performance statistics reporting, the RRC connection operation performed on the DU side, or may determine the first statistics event in a manner similar to that of reporting statistics data on the CU side specified by the relevant standard, which is not limited in this embodiment.

Step S120, reporting the first statistical event to the network management system, so that the network management system updates the statistical data aiming at the physical cell according to the first statistical event.

It should be noted that, because the first statistics event is reported by the physical DU, the network management system may take the physical DU as an object to perform data statistics of the performance index, and of course, it is also possible to implement that the physical DU is configured with a statistics object, for example, a physical cell object nrphysical celldu is added on the DU side, and the statistics object nrphysical celldu is simultaneously reported when the first statistics event is reported, and configured in the network management system to perform data statistics, and when the statistics data needs to be acquired, the statistics data associated with the nrphysical celldu object may be acquired through a performance checking and interface display module of the network management system, and the description of the physical object is only an exemplary description, and is not limited by the technical scheme of the embodiment, so that a person skilled in the art has a first statistics event and has a motivation selecting a statistics mode of the statistics data of the physical cell in the network management system according to an actual situation.

It should be noted that, based on the above embodiment, the trigger information may be any message related to RRC connection, so separate statistics may be performed on different messages in the network management system, for example, the statistical object corresponding to the physical DU is nrphysical celldu, and when the acquired trigger information is an RRC connection establishment request, statistics of "RRC connection establishment request" may be added once for the nrphysical celldu; for another example, after the RRC connection establishment is completed, the physical DU receives an RRC connection completion message sent by the UE, and the trigger information is the RRC connection completion message, so statistics of "RRC connection completion" may be added once for the nrphysical celldu.

It should be noted that, the update statistics of the network management system may be a common number of times plus one, or may be other manners, so that the statistics of the data may be implemented.

It should be noted that, the recording manner of the statistical data may be adjusted according to the operation and maintenance requirements, for example, statistical events reported in all trigger scenes may be counted, and when the operation and maintenance data are required, the corresponding statistical data may be obtained from the performance checking and interface display module of the network management system shown in fig. 2; for another example, in order to save network resources, when only the number of RRC connections needs to be counted, a statistical policy may be issued by the network management system, so that the physical DU reports the first statistical event only when receiving the RRC connection establishment message, and a person skilled in the art has an incentive to adjust the statistical policy according to actual requirements, which will not be described herein.

Notably, on the premise that the relevant standard reports the statistical data through the logical CU, the technical scheme of the embodiment can realize the performance index data statistics aiming at the physical cell, so that the operation and maintenance personnel can obtain the performance index areas of the physical cell and the logical cell from the network management system according to the requirement, the operation and maintenance personnel can be more effectively assisted in positioning the network performance problem, and the operation and maintenance efficiency and accuracy are improved.

In addition, referring to fig. 3, in an embodiment, step S120 shown in fig. 1 further includes, but is not limited to, the following steps:

step S310, a first identification of a physical cell is obtained;

step S320, reporting the first statistical event and the first identifier to the network management system, so that the network management system determines the first statistical object according to the first identifier, and updating the statistical data of the first statistical object according to the first statistical event.

It should be noted that, because the network management system is configured to manage a plurality of physical cells, in order to determine accuracy of the statistical data, the physical cell corresponding to the first statistical event may be determined by the first identifier, where the first identifier may be any type and may uniquely correspond to the physical cell, and the network management system may determine the corresponding physical cell according to the first identifier, which is not described herein again.

It should be noted that, referring to the description of the embodiment shown in fig. 1, the network management system may pre-configure the statistical object corresponding to each physical cell, and may include multiple types of statistical data under the same statistical object, which is not limited in this embodiment.

In addition, referring to fig. 4, in an embodiment, the trigger information is an RRC connection establishment request message, and after performing step S120 shown in fig. 1, the method further includes, but is not limited to, the following steps:

Step S410, determining a first logic cell according to a preset strategy, wherein the first logic cell belongs to a physical cell;

step S420, a first uplink RRC message is generated, wherein the first uplink RRC message carries a second identifier, and the second identifier belongs to a first logic cell;

step S430, a first uplink RRC message is sent to the first logical CU of the first logical cell, so that the first logical CU reports a second identifier and a second statistical event to the network management system, and the network management system determines a second statistical object according to the second identifier and updates the statistical data of the second statistical object according to the second statistical event.

It should be noted that, in the network sharing scenario, different operators share the same physical cell, and the logical CUs of different operators may be deployed in different devices, so when the UE initiates RRC access, after the physical DU receives the RRC connection establishment request message, the first logical cell needs to be selected first, and then the access information of the UE is sent to the first logical CU of the first logical cell for subsequent operations. In the RRC connection establishment stage, the UE may select any one of the logical CUs to perform RRC connection establishment, so a preset policy may be preset, a first logical cell may be selected from a plurality of logical cells to initiate RRC connection, and the specific preset policy may be adjusted according to actual requirements.

It should be noted that, for the network sharing scenario, one physical cell may have multiple logical cells, and in order to distinguish the logical cells, a cell global identifier (NR Cell Global Identifier, NCGI) is typically configured for the logical cells, where a common NCGI identifier generally includes public land network (Public Land Mobile Network, PLMN) information, a logical base station global identifier (Global gNB Identifier, gbid), and a cell identifier (CellID), and PLMN information may be used to distinguish different operators, where a logical CU can be deployed on different devices, an NCGI may be used as a second identifier, so that a network management system can identify the logical CU that sends an uplink RRC message, thereby determining a second statistical object corresponding to the logical CU.

It should be noted that, since the trigger message is an RRC connection establishment request and the second statistical event is for the first logical CU, an object associated with the first logical CU may be selected as the second statistical object, for example, the NRCellCU of the first logical CU may be used as the second statistical object, or of course, other objects may be selected as the second statistical object according to actual requirements, and may correspond to the first logical CU.

It should be noted that, since the first uplink RRC message is generated in response to the RRC connection establishment request message, the second statistics event may characterize the first logical CU to perform an RRC connection establishment request, for example, may be an RRC connection establishment request plus one, so that the network management system performs the addition of one for the number of times of performing the RRC connection establishment request with respect to the second statistics object, thereby completing statistics.

In addition, referring to fig. 5, in an embodiment, step S410 shown in fig. 4 further includes, but is not limited to, the following steps:

step S510, selecting a first logic cell from selectable logic cells belonging to physical cells;

or alternatively, the process may be performed,

in step S520, when the trigger information carries the first PLMN information, the logical cell corresponding to the first PLMN information is determined as the first logical cell.

It should be noted that, based on the description of the embodiment shown in fig. 4, after the UE accesses the physical cell, it needs to select the first logical cell from multiple logical cells of the physical cell, so as to initiate establishment of RRC connection, although different logical cells correspond to different operators, according to the rule of the relevant standard, after the logical CU receives the uplink RRC message, the downlink RRC message replied to the DU carries the correct operator information, and the UE directly performs RRC connection with the correct logical CU according to the allocated RRC resource, so that a random selection manner may be adopted to arbitrarily select one from the selectable logical cells belonging to the physical cell as the first logical cell.

It should be noted that, besides randomly selecting a logical cell for access, the UE may further add first PLMN information selected by the UE in the RRC connection establishment request message, where the PLMN information is uniquely corresponding to an operator, so when the DU receives the first PLMN information, it can accurately determine the operator corresponding to the UE, and according to the description of the foregoing embodiment, the NCGI of the logical cell includes PLMN information, so that the first logical cell may be directly determined according to the first PLMN information, and the determined first logical cell is an accurate logical cell.

In addition, referring to fig. 6, in an embodiment, after performing step S430 shown in fig. 4, the following steps are included, but not limited to:

step S610, when receiving a first downlink RRC message fed back by the first logical CU, sending RRC connection setup information to the UE so as to enable the UE to establish RRC connection;

step S620, when receiving the RRC connection setup completion message from the UE, reporting the first identifier and the third statistical event to the network management system, so that the network management system determines the first statistical object according to the first identifier, and updates the statistical data of the first statistical object according to the third statistical event.

It should be noted that after receiving the first downlink RRC message fed back by the first logical CU, it may be determined that the RRC connection resources of the UE have been allocated, and the DU may send RRC connection establishment information to the UE, so that the UE establishes an RRC connection, which is not related to an improvement of the RRC connection establishment procedure in this embodiment and will not be described herein.

It should be noted that, referring to the description of the embodiment shown in fig. 5, when the first logical cell is randomly selected, the first logical CU may be the wrong logical CU, but may select the correct logical CU to perform RRC connection according to the relevant criteria, so whether the establishment of RRC connection is continuously completed through the first logical CU or the establishment of RRC connection is performed by selecting other correct logical CUs, the establishment of RRC connection is completed for the physical cell, so after the RRC connection establishment completion message is received by the CU, the UE completes the establishment of RRC connection in the physical cell, which is an event that necessarily occurs, and may report a third statistical event to the network management system to perform data statistics before the UE and the logic complete the establishment of RRC connection, thereby completing the data statistics of RRC connection to the physical cell.

It should be noted that, the third statistical event is aimed at the UE completing establishment of RRC connection in the physical cell, so the third statistical event may be the number of RRC connection success times plus one, and the statistical object is the first statistical object corresponding to the first identifier, and the specific statistical manner may refer to statistics of the first statistical event in the embodiment shown in fig. 1, which is not repeated herein.

After reporting the third statistical event by the physical DU, the network management system stores the statistical data obtained according to the first statistical event and the data obtained by the third statistical event for the first statistical object, and taking RRC connection as an example, the statistical data obtained by the first statistical event may be the number of RRC connection requests, the statistical data obtained by the third statistical event may be the number of RRC connection establishment completions, and by using the two statistical data, the success rate of RRC connection establishment of the physical cell may be calculated, and may be used as the performance index of RRC connection of the physical cell, or may, of course, calculate the failure rate of RRC connection establishment according to actual requirements.

In addition, in an embodiment, the RRC connection setup complete message carries second PLMN information, where the second PLMN information belongs to a logical cell for establishing an RRC connection with the UE, and when the second PLMN information matches with PLMN information of the first logical cell, referring to fig. 7, after performing step S620 shown in fig. 6, the method further includes, but is not limited to, the following steps:

step S710, a second uplink RRC message is sent to the first logical CU, so that the first logical CU reports a second identifier and a fourth statistical event to the network management system, and the network management system determines a second statistical object according to the second identifier and updates the statistical data of the second statistical object according to the fourth statistical event.

It should be noted that, based on the description of the above embodiment, when the first logical CU selected for the first time is selected randomly, it may happen that the first logical CU is not the logical CU that ultimately establishes the RRC connection with the UE, but according to the relevant standard, the RRC connection establishment information carries the second PLMN information, so that the UE can determine the logical CU corresponding to the operator to which the UE belongs, and when the second PLMN information matches with the PLMN information of the first logical cell, the first logical cell is the correct logical cell, and the RRC connection establishment is completed through the first logical CU.

It should be noted that, because the fourth statistical event is carried in the second uplink RRC message by the first logical CU, the RRC connection establishment may be characterized, statistics may be performed on the second statistical object corresponding to the second identifier, and a specific statistical manner may refer to a method of the second statistical event, which is not repeated herein.

After the network management system has the statistics data of the second statistics event and the fourth statistics event, the RRC connection performance index of the first logical CU may be calculated, for example, the statistics data obtained according to the second statistics event is the RRC connection establishment request number, the statistics data obtained according to the fourth statistics event is the RRC connection establishment completion number, and the second statistics object is the NRCellCU, so that the RRC connection success rate or failure rate corresponding to the NRCellCU may be calculated, and the specific performance index type may be selected according to the actual requirement.

In addition, in an embodiment, the RRC connection setup complete message carries second PLMN information, where the second PLMN information belongs to a logical cell for establishing an RRC connection with the UE, and when the second PLMN information does not match PLMN information of the first logical cell, referring to fig. 8, after performing step S620 shown in fig. 6, the method further includes, but is not limited to, the following steps:

step S810, a context release request is sent to the first logic CU, so that the first logic CU reports a second identifier and a fifth statistical event to the network management system, the network management system determines a second statistical object according to the second identifier, and the statistical data of the second statistical object is updated according to the fifth statistical event;

in step S820, when a context release response fed back by the first logical CU is received, the context information for establishing an RRC connection with the first logical CU for the UE is released.

It should be noted that, referring to the description of the above embodiment, the first logical CU may be randomly selected, and therefore may not be the logical CU that ultimately establishes the RRC connection with the UE, and when the second PLMN information is inconsistent with the PLMN information of the first logical cell, it may be determined that the first logical CU is selected incorrectly, and the physical DU needs to reselect the correct logical cell and logical CU according to the second PLMN information. For the first logical CU, since the establishment of the RRC connection is initiated, in order to reduce the occupation of resources, a context release request may be sent to the first logical CU by the physical DU, so that the first logical CU responds and feeds back the context release response, thereby releasing the context related to the RRC connection in the physical DU, for example, clearing the data related to the UE stored in the first logical CU and the logical base station of the first logical cell.

It should be noted that, according to the existing standard, when the first logical CU is the logical CU with the error selection, the network management system does not perform statistics, but performs statistics of the second statistical event, that is, the number of times of the RRC connection establishment request is counted, but reporting of the second statistical event does not determine whether the first logical CU is correct, so that the statistical data cannot reflect the correct RRC connection corresponding to the first logical CU, and therefore, only the statistics data corresponding to the second statistical event cannot reflect the situation that the first logical CU correctly establishes the RRC connection, which is not beneficial to performing operation and maintenance decision, therefore, the first logical CU may also report the second identifier and the fifth statistical event to the network management system after receiving the context release request, so that the network management system performs connection with the error connection establishment request, for example, the fifth statistical event may be a logical CU selection error, and carries error information, for example, may be recorded as "PLMN not served by the CU", so that after the statistical data is derived according to the second identifier, the number of times of connection establishment requests corresponding to the second statistical event, the fourth statistical event corresponding to the RRC connection establishment request, the fifth statistical event and the fifth statistical event may be obtained, and the number of times of operation and the fifth statistical event may be more accurately performed, for example, according to the number of times of operations, which may be more accurately and better.

In addition, referring to fig. 9, in an embodiment, after step S820 shown in fig. 8 is performed, the following steps are included, but not limited to:

step S910, determining a second logic cell according to the second PLMN information;

step S920, a third uplink RRC message carrying a target field is sent to the second logical CU of the second logical cell, so that the second logical CU reports a third identifier and a sixth statistical event to the network management system in response to the target field, thereby enabling the network management system to determine a third statistical object according to the third identifier, and update statistical data of the third statistical object according to the sixth statistical event, wherein the target field characterizes that RRC connection establishment before the UE and the second logical CU is completed, and the third identifier belongs to the second logical cell.

It should be noted that, based on the description of the above embodiment, when the first logical CU selects the error, the second logical cell may be determined according to the second PLMN information, so that the establishment of the RRC connection is completed according to the second logical CU of the second logical cell, for the second logical CU, the third uplink RRC message and the first uplink RRC message are both uplink RRC messages, and for distinguishing, a target field may be introduced in the RRC uplink messages to describe the RRC connection establishment situation, for example, a common RRC-Container-rrcsetup complete may be used, and when the first uplink RRC message does not carry RRC-Container-rrcsetup complete, the logical CU that receives the first uplink RRC message may determine that the RRC connection establishment request is a new establishment request; for another example, if the third uplink RRC message carries RRC-Container-rrcsetup complete, the logical CU that receives the third uplink RRC message may determine that the RRC connection has been requested to be completed, and may perform a subsequent establishment procedure, or, of course, may select other description fields according to actual needs, which is not limited herein.

It should be noted that, the third identifier may refer to the second identifier described in the foregoing embodiment by using NCGI information, the third statistical object may also be NRCellCU corresponding to the second logical cell, and the sixth statistical event may include an RRC connection establishment request reported by the second logical CU and completion of RRC connection establishment, or may be reported separately by two statistical events, which is not limited in this embodiment, the statistical data for the RRC connection establishment request may refer to the description of the embodiment shown in fig. 4, and the statistical data for the completion of RRC connection establishment may refer to the description of the embodiment shown in fig. 8, where the difference is mainly that the third statistical object is determined by the third identifier in this embodiment, and for convenience of description, the description is not repeated here.

In addition, referring to fig. 10, the embodiment of the present invention further provides a statistical data acquisition method applied to a network management system, where the network management system is in communication connection with a physical DU of a physical cell, and the statistical data acquisition method includes, but is not limited to, the following steps:

step S1010, a first statistical event reported by a physical DU is obtained, wherein the first statistical event is determined by the physical DU according to triggering information aiming at RRC connection, and the triggering information comes from UE;

Step S1020, updating the statistics for the physical cell according to the first statistics event.

It should be noted that, the technical solution of the present embodiment is similar to that of the embodiment shown in fig. 1, and the difference is that the execution main body of the present embodiment is a network management system, and for simplicity and convenience of description, the specific principle of statistical data acquisition may refer to the description of the embodiment shown in fig. 1, and the detailed description is not repeated here.

It should be noted that, because the network management system can manage and control the physical cell, the statistical policy can be issued to the physical cell according to the actual requirement, for example, only the statistical data reported by the physical DU or only the statistical data reported by the logical CU, or both the statistical data reported by the physical DU and the logical CU can be simultaneously counted, and those skilled in the art have an incentive to adjust the statistical policy according to the actual requirement, which is not limited herein.

It should be noted that, in the network management system shown in fig. 2, the statistical data may be checked through the performance checking and interface display module, for example, the first identifier may be input, so as to obtain the statistical data for the physical cell; for another example, the second identifier or the third identifier may be used to obtain the corresponding statistical data of the logical CU, and the specific statistical data obtaining and displaying method is a technology well known to those skilled in the art, which is not described herein.

In addition, in an embodiment, step S1020 shown in fig. 10 further includes, but is not limited to, the following steps:

step S1110, a first identifier reported by a physical DU is obtained, and a first statistical object is determined according to the first identifier, wherein the first identifier belongs to a physical cell;

in step S1120, the statistics of the first statistics object are updated according to the first statistics event.

It should be noted that, the technical solution of the present embodiment is similar to that of the embodiment shown in fig. 3, and the difference is that the execution main body of the present embodiment is a network management system, and for simplicity and convenience of description, the specific principle may refer to the description of the embodiment shown in fig. 3, and the description is not repeated here.

In addition, in an embodiment, the triggering information is an RRC connection setup request message, referring to fig. 12, after step S1020 shown in fig. 10 is performed, the method further includes, but is not limited to, the following steps:

step S1210, acquiring a first identifier and a third statistical event reported by a physical DU under the condition that an RRC connection setup completion message sent by the UE is received;

step S1220, determining a first statistical object according to the first identifier;

in step S1230, the statistics of the first statistics object are updated according to the third statistics event.

It should be noted that, the technical solution of the present embodiment is similar to that of the embodiment shown in fig. 6, and the difference is that the execution main body of the present embodiment is a network management system, and for simplicity and convenience of description, the specific principle may refer to the description of the embodiment shown in fig. 6, and the description is not repeated here.

In addition, in an embodiment, the network management system is communicatively connected to the logical CU, referring to fig. 13, after performing step S1020 shown in fig. 10, the method further includes, but is not limited to, the following steps:

step S1310, obtaining a cell identifier and a cell statistical event reported by a logic CU, wherein the cell identifier belongs to a logic cell to which the logic CU belongs;

step S1320, determining a cell statistical object according to the cell identifier;

step S1330, the statistics of the cell statistics object is updated according to the cell statistics event.

It should be noted that, for the network management system, it is not known in advance whether the logical CU that sends the statistical event is ultimately RRC-connected with the UE, so when the reported cell identifier and the cell statistical event are the RRC-connected establishment phases, the logical CU corresponds to the first logical CU shown in fig. 4 and fig. 7, the cell identifier corresponds to the second identifier shown in fig. 4 and fig. 7, the cell statistical event may be the second statistical event shown in fig. 4 or the fourth statistical event shown in fig. 7, and the specific technical principle may refer to the description of the embodiment shown in fig. 4 and fig. 7, where the difference is that the execution body of the embodiment is the network management system, and for convenience of description, a detailed description is not repeated herein.

It should be noted that, when the logical CU reporting the cell identifier and the statistics event is the logical CU that is determined to establish the RRC connection with the UE for the first time through the RRC-Container-rrcsetup complete, the logical CU is equivalent to the second logical CU in the embodiment shown in fig. 9, the cell identifier is equivalent to the third identifier shown in fig. 9, the cell statistics event may be the sixth statistics event shown in fig. 9, and the specific technical principle may refer to the description of the embodiment shown in fig. 9, where the difference is mainly that the execution subject of the embodiment is a network management system, so that for convenience in description, a redundant description is omitted herein.

In order to better illustrate the technical solution of the present invention, three specific examples are presented below, and it should be noted that, in the following three specific examples, A first logical CU is exemplified by CU-A, A second logical CU is exemplified by CU-B, A first identifier is exemplified by A physical cell identifier, A second identifier is exemplified by NCGI-A, A third identifier is exemplified by NCGI-B, PLMN information of the first logical cell is exemplified by PLMN-A, and PLMN information bits of the second logical cell are exemplified by PLMN-B.

Example one: statistics on only physical DUs reporting, referring to fig. 14, this example includes, but is not limited to, the following steps:

step S1401, a user configures a performance statistics task in a network management system, only statistics of performance index data of a physical cell level is performed, and the performance statistics task is issued to a physical DU, a CU-A and a CU-B;

Step S1402, the physical DU, the CU-A and the CU-B receive performance statistics tasks, the analysis tasks are only statistics data of the physical cell level, the physical DU starts performance statistics reporting, and the CU-A and the CU-B do not start performance statistics reporting;

step S1403, the physical DU receives the RRC connection establishment request message of the UE, reports RRC connection performance statistics to the network management system, where the statistics object is physical cell nrphysical celldu, and carries a physical cell identifier, and the event is the number of RRC connection establishment requests plus 1;

step S1404, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the number of RRC connection establishment times on the "nrphysical celldu" object indicated by the physical cell identifier;

step S1405, the physical DU randomly selects a logical cell corresponding to one of the operators and a logical base station DU and a logical base station CU-a corresponding to the logical cell according to the physical cell information accessed by the UE and the operator information sharing the physical cell resource, or selects a logical cell corresponding to the PLMN and a logical base station physical DU and a logical base station CU-a corresponding to the logical cell according to PLMN information explicitly carried in the RRC connection establishment request message of the UE;

Step S1406, the physical DU sends an initial uplink RRC message to the selected CU-A, wherein the initial uplink RRC message carries NCGI-A;

step S1407, CU-A replies the downlink RRC message to the physical DU;

step S1408, the physical DU receives the downlink RRC message of CU-A and sends an RRC connection setup message to the UE;

step S1409, the UE replies to the physical DU with an RRC connection setup complete message and carries PLMN-A;

step S1410, the physical DU receives the RRC connection setup completion message of the UE, the RRC connection setup is completed, the RRC performance statistics is reported to the network management system, the statistics object is the physical cell NRPhysics, and the physical cell identifier is carried, the event is the RRC connection setup completion times added by 1;

step 1411, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the number of RRC connection establishment completed times once on the "nrphysical celldu" object indicated by the physical cell identifier;

in step S1412, the physical DU sends an uplink RRC message to CU-a, where the message carries RRC-Container-RRCSetupComplete, CU-a to complete the subsequent RRC connection establishment procedure.

Example two: simultaneously statistics of physical DUs and logical CUs, and the first selected CU-a is the correct logical CU, referring to fig. 15, this example includes, but is not limited to, the following steps:

Step S1501, the physical DU receives the RRC connection setup request message of the UE, reports RRC connection performance statistics to the network management system, the statistics object is the physical cell NRPhysics, and carries the physical cell identifier, the event is the RRC connection setup request times added with 1;

step S1502, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the number of RRC connection establishment times on the "nrphysical celldu" object indicated by the physical cell identifier;

step S1503, the physical DU randomly selects a logic cell corresponding to one operator and a logic base station DU and a logic base station CU-A corresponding to the logic cell according to the physical cell information accessed by the UE and the operator information sharing the physical cell resource, or selects the logic cell corresponding to the PLMN and the logic base station physical DU and the logic base station CU-A corresponding to the logic cell according to the PLMN information explicitly carried in the RRC connection establishment request message of the UE;

step S1504, the physical DU sends an initial uplink RRC message to the selected CU-A, wherein the message carries NCGI-A;

step S1505, CU-A receives the initial up-going RRC message of the physical DU, stores NCGI-A in the message carrying, judges that RRC-Container-RRCSetup complete is not carried in the message, establishes a new RRC connection, reports RRC connection performance statistics to the network management system, the statistics object is a logic cell 'NRCellCU', the logic cell is identified as NCGI-A, and the event is the number of RRC connection establishment requests added with 1;

Step S1506, the network management system receives the RRC connection performance statistics report message of the CU-A, and increases the RRC connection establishment times once on the NRCellCU object indicated by the NCGI-A;

step S1507, CU-A replies the downlink RRC message to the physical DU;

step S1508, the physical DU receives the downlink RRC message of the CU-A and sends an RRC connection setup message to the UE;

step S1509, the UE replies the completion of RRC connection to the physical DU, and the message carries PLMN-A;

step S1510, the physical DU receives the RRC connection establishment completion message of the UE, the RRC connection establishment is completed, the RRC performance statistics is reported to the network management system, the statistics object is the physical cell NRPhysics carrying the physical cell identifier, and the event is the RRC connection establishment completion times added with 1;

step S1511, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the times of completing the RRC connection establishment once on the 'NRPhysicalCellDU' object indicated by the physical cell identifier;

step S1512, the physical DU sends an uplink RRC message to the CU-A, wherein the message carries RRC-Container-RRCSetup complete;

step S1513, CU-A receives the up-going RRC message of the physical DU, judge that the message carries RRC-Container-RRCSetup complete, finish establishing for RRC connection, report RRC connection performance statistics to the network management system, the statistical object is logical cell "NRCellCU", the logical cell label is NCGI-A, the event is RRC connection and establishes the number of times to add 1;

Step S1514, the network management system receives the RRC connection performance statistics report message of CU-a, and increases the number of RRC connection establishment completed times once on the "NRCellCU" object indicated by NCGI-a.

Example three: the statistics of the physical DUs and logical CUs are simultaneously counted, and the first selected CU-a is the wrong logical CU and the correct logical CU is CU-B, referring to fig. 16, this example includes but is not limited to the following steps:

step S1601, the physical DU receives the RRC connection establishment request message of the UE, reports RRC connection performance statistics to the network management system, where the statistics object is physical cell "nrphysical celldu", and carries a physical cell identifier, and the event is the number of RRC connection establishment requests plus 1;

step S1602, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the times of RRC connection establishment once on the 'NRPhysicalCellDU' object indicated by the physical cell identifier;

step S1603, the physical DU randomly selects a logical cell corresponding to one of the operators and a logical base station DU and a logical base station CU-a corresponding to the logical cell according to the physical cell information accessed by the UE and the operator information sharing the physical cell resource, or selects a logical cell corresponding to the PLMN and a logical base station physical DU and a logical base station CU-a corresponding to the logical cell according to PLMN information explicitly carried in the RRC connection establishment request message of the UE;

Step S1604, the physical DU sends an initial uplink RRC message to the selected CU-A, wherein the message carries NCGI-A;

step S1605, CU-A receives the initial up-going RRC message of the physical DU, stores NCGI-A in the message carrying, judges that RRC-Container-RRCSetup complete is not carried in the message, establishes a new RRC connection, reports RRC connection performance statistics to the network management system, the statistics object is a logic cell 'NRCellCU', the logic cell is identified as NCGI-A, and the event is the number of times of RRC connection establishment requests added with 1;

step S1606, the network management system receives the RRC connection performance statistics report message of the CU-A, and increases the RRC connection establishment times once on the NRCellCU object indicated by the NCGI-A;

step S1607, CU-A replies the downlink RRC message to the physical DU;

step S1608, the physical DU receives the downlink RRC message of the CU-A and sends an RRC connection establishment message to the UE;

step S1609, the UE replies to the physical DU that RRC connection establishment is completed, the message carrying PLMN-B;

step S1610, the physical DU receives the RRC connection establishment completion message of the UE, the RRC connection establishment is completed, the RRC performance statistics is reported to the network management system, the statistics object is the physical cell NRPhysics carrying the physical cell identifier, and the event is the RRC connection establishment completion times added by 1;

Step S1611, the network management system receives the RRC connection performance statistics report message of the physical DU, and increases the times of completing the RRC connection on the 'NRPhysicalCellDU' object indicated by the physical cell identifier once;

step S1612, the physical DU sends a UE context release request message to the CU-A according to the CU-A selection error judged by the PLMN-B carried in the RRC connection setup completion message, wherein the release reason carried in the message is 'PLMN not served by the CU';

step S1613, CU-A receives the UE context release request message of the physical DU, and the release reason is 'PLMN not served by the CU', judging that CU is wrong in selection, reporting RRC connection performance statistics to the network management system, wherein the statistics object is a logic cell 'NRCellCU', the logic cell is identified as NCGI-A, and the UE release times of the event is 'PLMN not served by the CU' cause is increased by 1;

step S1614, the network management system receives the RRC connection performance statistics report message of the CU-A, and increases the UE release times of the reason of PLMN not served by the CU once on the NRCellCU object indicated by the NCGI-A according to the message content;

step S1615, CU-A sends UE context release command to physical DU;

step S1616, the physical DU receives the UE context release command of the CU-A, clears the data related to the UE stored in the logical cell and the logical base station corresponding to the operator A, and replies the completion of UE context release to the CU-A;

Step S1617, the physical DU re-determines the CU-B as the correct logical CU for the UE, and sends an uplink RRC message to the CU-B, wherein the message carries RRC-Container-RRCSetupComplete, PLMN-B, NCGI-B;

step S1618, CU-B receives the initial up RRC message of DU, saves NCGI-B carried in the message, judges that the message carries RRC-Container-RRCSetup complete, reports RRC connection performance statistics to the network manager, the statistics object is logic cell NRCellCU, the logic cell is identified as NCGI-B, and the event is that the number of RRC connection establishment requests is increased by 1;

step S1619, the network management system receives the RRC connection performance statistics report message of the CU-B, and increases the number of times of RRC connection establishment requests on the 'NRCellCU' object indicated by the NCGI-B;

step S1620, CU-B reports RRC connection performance statistics to a network manager, wherein the statistics object is a logic cell NRCellCU, the logic cell is identified as NCGI-B, and the event is that the number of times of completing RRC connection establishment is increased by 1;

in step S1621, the network management system receives the RRC connection performance statistics report message of CU-B, and increases the number of RRC connection establishment completed times once on the "NRCellCU" object indicated by NCGI-B.

In addition, referring to fig. 17, an embodiment of the present invention further provides a base station 1700 including: memory 1710, processor 1720, and computer programs stored on memory 1710 and executable on processor 1720.

The processor 1720 and the memory 1710 may be connected by a bus or otherwise.

The above memory 1710, processor 1720 may be located within a DU in a base station, in particular.

The non-transitory software programs and instructions required to implement the statistical data acquisition methods of the above embodiments are stored in the memory 1710 and when executed by the processor 1720, perform the statistical data acquisition methods of the above embodiments, for example, perform the method steps S110 to S120 in fig. 1, the method steps S310 to S320 in fig. 3, the method steps S410 to S430 in fig. 4, the method steps S510 to S520 in fig. 5, the method steps S610 to S620 in fig. 6, the method step S710 in fig. 7, the method steps S810 to S820 in fig. 8, and the method steps S910 to S920 in fig. 9 described above.

In addition, referring to fig. 18, an embodiment of the present invention further provides a network management system 1800, where the network management system 1800 includes: memory 1810, processor 1820, and computer programs stored on memory 1810 and executable on processor 1820.

The processor 1820 and the memory 1810 may be connected by a bus or other means.

The non-transitory software program and instructions required to implement the statistical data acquisition method of the above-described embodiments are stored in the memory 1810, and when executed by the processor 1820, the statistical data acquisition method of the above-described embodiments is performed, for example, the method steps S1010 to S1020 in fig. 10, the method steps S1110 to S1120 in fig. 11, the method steps S1210 to S1230 in fig. 12, and the method steps S1310 to S1330 in fig. 13 described above are performed.

The above described embodiments of the apparatus are only illustrative, wherein the units described as separate components may or may not be physically separate, i.e. may be located in one place, or may be separately onto a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions that are executed by a processor or a controller, for example, by one of the processors in the above base station embodiment, and that may cause the processor to perform the statistical data acquisition method in the above embodiment, for example, perform the method steps S110 to S120 in fig. 1, the method steps S310 to S320 in fig. 3, the method steps S410 to S430 in fig. 4, the method steps S510 to S520 in fig. 5, the method steps S610 to S620 in fig. 6, the method steps S710 to S820 in fig. 7, and the method steps S910 to S920 in fig. 8 described above; as another example, the above-mentioned processor may be caused to execute the statistical data acquisition method in the above-mentioned embodiment by executing the above-mentioned processor in the above-mentioned network management system embodiment, for example, the method steps S1010 to S1020 in fig. 10, the method steps S1110 to S1120 in fig. 11, the method steps S1210 to S1230 in fig. 12, and the method steps S1310 to S1330 in fig. 13. Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media), respectively. The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (15)

1. A statistical data acquisition method applied to a physical distribution unit DU of a physical cell, the physical DU being communicatively connected to a network management system, the method comprising:

when receiving triggering information for Radio Resource Control (RRC) connection from a terminal User Equipment (UE), determining a first statistical event corresponding to the triggering information;

and reporting the first statistical event to the network management system so that the network management system updates the statistical data aiming at the physical cell according to the first statistical event.

2. The method according to claim 1, wherein reporting the first statistics event to the network management system to cause the network management system to update statistics for the physical cell according to the first statistics event comprises:

acquiring a first identifier of the physical cell;

And reporting the first statistical event and the first identifier to the network management system so that the network management system determines a first statistical object according to the first identifier and updates the statistical data of the first statistical object according to the first statistical event.

3. The method according to claim 2, wherein the trigger information is an RRC connection setup request message, and after the reporting of the first statistical event to the network management system, the method further comprises:

determining a first logic cell according to a preset strategy, wherein the first logic cell belongs to the physical cell;

generating a first uplink RRC message, wherein the first uplink RRC message carries a second identifier, and the second identifier belongs to the first logic cell;

and sending the first uplink RRC message to a first logic concentration unit CU of the first logic cell, so that the first logic CU reports a second identifier and a second statistical event to the network management system, and the network management system determines a second statistical object according to the second identifier and updates statistical data of the second statistical object according to the second statistical event.

4. A method according to claim 3, wherein said determining the first logical cell according to a preset strategy comprises:

Selecting the first logic cell from the selectable logic cells belonging to the physical cell;

or alternatively, the process may be performed,

and when the trigger information carries the first public land network (PLMN) information, determining a logic cell corresponding to the first PLMN information as the first logic cell.

5. The method of claim 3, wherein after the sending the first uplink RRC message to the first logical CU of the first logical cell, the method further comprises:

when a first downlink RRC message fed back by the first logic CU is received, RRC connection establishment information is sent to the UE, so that the UE establishes RRC connection;

and when receiving the RRC connection establishment completion message from the UE, reporting the first identifier and the third statistical event to the network management system so that the network management system determines a first statistical object according to the first identifier and updates the statistical data of the first statistical object according to the third statistical event.

6. The method of claim 5, wherein the RRC connection setup complete message carries second PLMN information, the second PLMN information being assigned to a logical cell for establishing an RRC connection with the UE, and wherein when the second PLMN information matches PLMN information of the first logical cell, after reporting the first identifier and the third statistical event to the network management system, the method further comprises:

And sending a second uplink RRC message to the first logic CU so that the first logic CU reports a second identifier and a fourth statistical event to the network management system, thereby enabling the network management system to determine a second statistical object according to the second identifier and update the statistical data of the second statistical object according to the fourth statistical event.

7. The method of claim 5, wherein the RRC connection setup complete message carries second PLMN information, the second PLMN information being assigned to a logical cell that establishes an RRC connection with the UE, and wherein when the second PLMN information does not match PLMN information of the first logical cell, after reporting the first identifier and the third statistical event to the network management system, the method further comprises:

sending a context release request to the first logic CU, so that the first logic CU reports a second identifier and a fifth statistical event to the network management system, and the network management system determines a second statistical object according to the second identifier and updates the statistical data of the second statistical object according to the fifth statistical event;

and when a context release response fed back by the first logic CU is received, releasing the context information for establishing RRC connection with the first logic CU for the UE.

8. The method of claim 7, wherein after the releasing the context information for the UE to establish the RRC connection with the first logical CU, the method further comprises:

determining a second logic cell according to the second PLMN information;

and sending a third uplink RRC message carrying a target field to a second logic CU of the second logic cell, so that the second logic CU responds to the target field to report a third identifier and a sixth statistical event to the network management system, thereby enabling the network management system to determine a third statistical object according to the third identifier and update statistical data of the third statistical object according to the sixth statistical event, wherein the target field characterizes that RRC connection establishment before the UE and the second logic CU is completed, and the third identifier belongs to the second logic cell.

9. A statistical data acquisition method applied to a network management system, wherein the network management system is in communication connection with a physical DU of a physical cell, the method comprising:

acquiring a first statistical event reported by the physical DU, wherein the first statistical event is determined by the physical DU according to triggering information aiming at RRC connection, and the triggering information comes from UE;

And updating the statistical data for the physical cell according to the first statistical event.

10. The method of claim 9, wherein the updating the statistics for the physical cell based on the first statistics event comprises:

acquiring a first identifier reported by the physical DU, and determining a first statistical object according to the first identifier, wherein the first identifier belongs to the physical cell;

updating the statistics of the first statistical object according to the first statistical event.

11. The method of claim 10, wherein the trigger information is an RRC connection setup request message, and wherein after the updating of the statistics of the first statistics object according to the first statistics event, the method further comprises:

acquiring the first identifier and the third statistical event reported by the physical DU under the condition that the RRC connection establishment completion message sent by the UE is received;

determining the first statistical object according to the first identifier;

updating the statistics of the first statistical object according to the third statistical event.

12. The method according to claim 10, wherein the network management system is communicatively connected to a logical CU, and wherein after the updating of the statistics for the physical cell according to the first statistics event, the method further comprises:

Acquiring a cell identifier and a cell statistical event reported by the logic CU, wherein the cell identifier belongs to a logic cell to which the logic CU belongs;

determining a cell statistical object according to the cell identifier;

and updating the statistical data of the cell statistical object according to the cell statistical event.

13. A base station, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the statistical data acquisition method according to any one of claims 1 to 8 when executing the computer program.

14. A network management system, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the statistical data acquisition method according to any one of claims 9 to 12 when executing the computer program.

15. A computer-readable storage medium storing computer-executable instructions for performing the statistical data acquisition method according to any one of claims 1 to 12.

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